Run a fair comparison
- Prepare a portrait, a screenshot with text and a transparent logo.
- Export each candidate at recorded dimensions and settings.
- Compare file size and time only after checking output quality.
- Record transparency, metadata and browser compatibility separately.
A situation to try.
Do not compare a 1200-pixel output with a 2400-pixel output as though both preserve the same detail. Keep dimensions equal or explicitly label the tradeoff.
Use the tool’s synthetic example first where available. The example here explains a decision; it is not a reported benchmark result.
Before you call it done.
- Inspect faces and fine text at 100%.
- Check alpha transparency around a logo.
- Record outputs larger than the input.
Know the limits.
Dated comparative measurements are pending. No competitor ranking is asserted.
This tool’s current boundary: Review the output before using it. Your input remains on this device.
Evidence and scope
Technical source guidance and task-specific output checks. These do not establish that every file, browser or device passes.
Use the checks above on your own exported result. A source explains the format or mechanism; it is not proof that this export preserved every feature.
Technical reference: MDN: image formats ↗
Choose the right tool for this step.
Batch image compressor
Smaller pictures, with a preview before you download.
On your deviceWhy use it: Compare a batch at fixed dimensions.
Before you start: Inspect quality before deciding by size.
Image format converter
Convert pictures to a browser-supported output format.
On your deviceWhy use it: Compare accepted formats.
Before you start: Destination compatibility matters more than a filename.
Preparation tools process locally. Official service links take you to the authority’s website. Inspect any exported copy before sharing it.